Tube has 60 fins per ft
A heat transferring unit utilizing a separate source of steam or hot water as the heat transfer medium. It consists of finned parallel tubes joined together by a header or headers and is designed for installation in the ducts of a forced air circulating system. It may be provided with a flanged outer casing to facilitate mounting of the unit in planned or existing duct work. Circulation of the heated air is achieved by use of a blower or fan not integral with the heating unit.
Classification: Air heaters and hot air distributors, not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or steel
NSN 6320-00-139-1090
NSN 4140-01-487-6227
NSN 5930-00-402-1859
NSN 5925-00-318-3023
NSN 5910-00-470-2673
NSN 6685-01-206-8974
NSN 5895-00-278-5194
NSN 6110-01-393-6192
NSN 6135-01-407-0594
NSN 6110-00-792-9743
NSN 6145-01-134-7603
NSN 6685-00-871-0335